Discus Classification and Evolution
The Discus is a species of tropical Cichlid, found in the Amazon basin of South America. There are three recognised sub-species of the Discus which are the Green Discus, the Blue Discus and the Brown Discus. The Discus was first described by Dr. Heckel in 1840 and despite variations in colour, all are similar in appearance but are found in different geographic locations. There is however some disagreement over the scientific names for each species, but many agree that most captive bred Discus are thought to have originated from these three sub-species.